The EPA has increased its BACT standards to impose greenhouse gas emissions standards for passenger cars, light-duty trucks, and medium-duty passenger vehicles and all businesses that emit greenhouse gases. The emissions from these small businesses and vehicles are not per se pollutants, but, rather, greenhouse gases. Does the EPA have the authority to regulate these emissions in vehicles? What about the costs associated with additional permits? [Utility Air Regulatory Group v. E.P.A., 134 S. Ct. 2427]